2026-06-27T10:23:05Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/602172024-08-29T17:47:43Zcom_20.500.14352_14col_20.500.14352_15

Lopez García,, A. R. Presa Muñoz De Toro, Patricia Marcela De La Rodiguez, A. M. 2023-06-20T20:24:14Z 2023-06-20T20:24:14Z 1991-11-01 1098-0121 10.1103/physrevb.44.9708 https://hdl.handle.net/20.500.14352/60217 http://dx.doi.org/10.1103/physrevb.44.9708 https://journals.aps.org The temperature dependence of the hyperfine interaction in the paraelectric phase of BaHfO₃ in the temperature range from liquid-nitrogen temperature to 1350 K has been studied. The experimental results show an Abragam-Pound mechanism for the attenuation of the angular correlation. In this cubic structure the attenuation would be consistent with a relaxation mechanism that involves O-ion hopping between vacant sites in the lattice. Using the point-charge model for the estimation of the electric field gradient produced by an O vacancy in the coordination sphere of the probe ion, the process is characterized by a correlation time τ_(c) = 12 ± 1 ps at RT. eng open access Temperature-dependence of the hyperfine interaction in the cubic phase of BaHfO₃ journal article